Question

HELP MEE PEOPLE.
4.) Graph the two equations to solve the system. What is the solution?
x + y = -8 and x - y = 8

(0, -8)
(-12, 4)
(-4, -4)
no solution
5.)Graph the two equations to solve the system. What is the solution?
3x - 2y = 6 and 5x + 3y = -9

(4, 3)
(5, 4.5)
(0, -3)
infinitely many solutions
6.) Is the system consistent or inconsistent?
2x + y = 7 and x - 2y = 7

consistent
inconsistent
7.) The system, 6x - 4y = 5 and 9x - 6y = 5, is consistent.
True
False

Answer 1

For number 4 just sub x and y into the given equations.
The one that is true is the solution.
Are you not interested in the process at all?

Answer 2

4.


To graph the others, assuming you're using pen and paper,
for each equation, set y=0 to solve for the x-intercept, and x=0 to solve for the y-intercept. Join the two intercepts to graph the first line. Repeat for the second.
For example, #4,
x + y = -8
Set y=0, so x=-8. Set x=0, so y=-8. Next step is to join together the two points
(-8,0) and (0,-8) to get the first line.
You can do similarly for the second line as a check.